Merge pull request #8 from kitconcept/scale-after

Add option to scale a service after a successful deployment

Author: ericof

README.md

@@ -38,6 +38,7 @@ GitHub Action and Docker image used to deploy a Docker stack on a Docker Swarm.
 | `stack_param` | `STACK_PARAM` | Additional parameter (env var) to be passed to the stack. | | |
 | `env_file` | `ENV_FILE` | Additional environment variables to be passed to the stack. | | |
 | `debug` | `DEBUG` | Verbose logging | | **0** |
+| `scale_after` | `SCALE_AFTER` | Scale a service after a deployment has converged successfully. Example: servicename=1 | | |
 
 
 ## Using the GitHub Action

action.yml

@@ -53,6 +53,9 @@ inputs:
     description: "Debug information"
     required: false
     default: "0"
+  scale_after:
+    description: "Service to scale after successful deploy (example: servicename=1)"
+    default: ""
 runs:
   using: 'docker'
   image: 'docker://ghcr.io/kitconcept/docker-stack-deploy:latest'
@@ -70,3 +73,4 @@ runs:
     STACK_PARAM: ${{ inputs.stack_param }}
     ENV_FILE: ${{ inputs.env_file }}
     DEBUG: ${{ inputs.debug }}
+    SCALE_AFTER: ${{ inputs.scale_after }}

scripts/docker-entrypoint.sh

@@ -69,6 +69,13 @@ check_deploy() {
   /stack-wait.sh -t "${DEPLOY_TIMEOUT}" "${STACK_NAME}"
 }
 
+scale_after() {
+  if [[ -n "$SCALE_AFTER" ]]; then
+    echo "Scaling services: $SCALE_AFTER"
+    docker service scale $SCALE_AFTER
+  fi
+}
+
 [ -z ${DEBUG+x} ] && export DEBUG="0"
 
 # ADDITIONAL ENV VARIABLES
@@ -182,3 +189,5 @@ else
   echo "Deploy: Failed"
   exit 1
 fi
+
+scale_after